Ice-cream freezer.



E F. TYSON.

E ICE CREAM FREEZER. APPLICATION FILED JULY 8.1911.

RENEWED (JCT. 16.19.

Patented May 29, 1917.

INVENTOR FRANK TYSON BY His ATTORNEY UNITED STATES PATENT "OFFICE.

To all whom it may concern:

' Be it known that I, FRANK Tyson, a citizen of the United States, and a resident of Canton, Ohio, have ,invented certain Im- 6 provemcnts inIce-Gream Freezers, of which the following is a specification.

One object of my invention is to so construct an ice cream freezer as to permit ac cess to the cylinder from either end of the same, and a further object is to provide, in the rear head of the. freezing cylinder, a dead-air space which serves as a non-con ductor of heat.

These objects I attain in the manner hereinafter setforth, reference being had to the accompanying drawingsfin whichigure 1 is a view, partly in side elevation and partly in long tudinal vertical section, of suflicient of an ice cream freezer to illustrate my present invention;

Fi 2 is a transverse vertical section on Fig. 3 is 'a transverse vertical section on the h'ne 0%, Fig.1, p

The swinging scraper blades and the fixed longitudina .beater and ejector bladeshave beeniremoved from the dasher shown in Fig.

1 in order that they may not interfere with the pro or illustration of, the dasher.

' The reezing cylinder and the mechanism employed for imparting rotating motion to the dasher contained therein may be mounted upon a supporting frame which is comosed of op osite halves 1, secured together y means 0 bolts 2 passin through ugs 3 a1id, 3 -projecting downwar' ly from the bed .ontable members 4, '4" at the top of the sup- ,p n 'i' e-a h nin F jMountedflupon the supporting frame is. a su port 5 for a transverse shaft-6 which constitutes the primary member of p the mechafor imparting rotating movement to the 'dasher; The-bearings 'for the shaft 6 are preferably completed by amp 7 which may alsoconstitute a sup. ortfo'r a, short longitudinalshaft 9, the arings for thisshaft beingcom le'ted by. a cap .10 The shaft support Sn-emf e-mp ortfi for the shaft 6 is preferably same Specification 01 Letters Patent.

A dasher-driving gear must always hear their cap 7 are recessed, for the reception of that-member. 12 ofth'e-dasher-drivs .7 and; 101a-re recessed I for the mm: son, or omen, onro, nsszenoa are m. w. manna, or omen, oino.

- ion-ennui raanzm Patented May 29, 191 7.

jenewed October 16, 1816. Serial No. 188,0.

secured by'means of bolts 14 to the members of the su porting frame suitable flanges on the cap being secured to like flan es on the shaft support 5, by means of be ts 15, and properly flanged portions on the caps 7 and 10 being secured together by bolts 16.

By reason of this method of construction the bearings for the various shafts of the proper relation to the supporting frame, the separate members of the latter are much lighter and easier to handle than a'frame cast in one piece, and the casting of the frame is simplified and cheapened.

Projectin upwardly from the table members 4, 4 o thesupp'orting frame are lugs 17, 17 (Fig. 3) which constitute a bracket fitting between ears19, 19 projecting from a carrier disk 20, said ears beingpivoted to the bracket by means of a transverse bolt 21.

To a threaded opening in the table members 4, 4 of the supporting frame, near the forward end of the latter,; is preferabl adapted an adjustin screw 22, upon which rests a threaded stu 23, depending from the outer casin of the freezing vessel. This stud may contained between opposite hooked lugs 24, 24 on the members 4, 4' of the supporting frame, and be provided 85 with a nut 25 (see Fig. 2).

The rear end of the freezing vessel is, as hereinafter described, carriedby the pivoted disk 20 and by proper adjustment of the screw 22 the front ortion ofsaid freezing vessel can be raised and lowered. until an exact horizontal level'of the same have been established, whereuponi--the parts can be locked in such position bytightenin the nut 25 against the undersides of-theove *anging hooked lugs 24. and 24, as shown in Fig. 2.

The freezing vessel preferably consists of r a rear ring 26' and a front'ring 27, these 'rin being connected b -means of concentric drums 29-, 30 and 1, the innermost drum constitutin the outer wall of the freezing chamber, t e dru'm'80 cooperating with the drum 29 to formabrine-circulatin chamber around the latter, and the drum 1 cofiperating with the'drurn 30 to form, between the two, an annular chamber for the reee tion of material which'isa non-conductorof 'eat. This construction, ofthis portion of the freezing'vessel however, forms no part of my present invention. 4

To the frontring 27 of the freezing vess'el is. preferably secured a detachable head construction also forming no part of my present invention.

The ring 26 at the rear end of the freezing vessel is preferably closed by a detachable head 36, which may be held in place in said ring by means of set screws 37 bearing upon said head and adapted to threaded openings in the carrier disk 20, as shown in Fig. 1, said carrier disk 20 bearing against the ring 26 andhavin a flange overlapping said ring and provi ed with set screws 39 whereby it is secured thereto.

Between the carrier disk 20 and the head 36 is thus formed a dead-air space 40, WlllCll interferes with the transmission of the heat to the contents of the freezing. chamber or brine-circulatin chamber from outside of this end of the reezer.

Attempts have been "heretofore made to form-a dead-air space at the rear end of the freezing vessel by casting a hollow head thereon, but such attempts have not been successful because, owing to the large area of the core necessary to be employed in making such a casting, andbecause of the.

lifting action of the metal 'thereon when the mold is being poured, it has been found M impossible to properly anchor. such core in position in the mold. By reason of the construction whichl have adopted, no coring of the parts is -necessary,-and a dead-air ri'pace 0 any desired sizecan readily be ormed. Another advantage arising from this construction is that the'cylindrical portion of the freezing vessel can be readil removed from the 'ivoted carrier dis 20 when desired and t e rear head 36'can also be readily detached from. the body of the freezing vessel in order topermit access to the rear end of the freezin chamber.

- The head 36 has a-centra hollow sleeve-41 projectin through a central openin' in the carrier disk; 20 andconstituting'a earin for thespindl-AQ of the dasher-with whicfi the'freezmg' vessel isrovided, said sleeve 41 also carrying the f'o' lower 430i a.

box f nPi Yentingleakage of,. n1 at'eria around the spindle At its outer '-eiid ,-.the spindle; Ya res tees for the receptionf-lef'f-thedrivin'g .end. 44* of the"shaft;;9"- said drivingiend 'bem'g of uivalent Is sectlon, as shown iii-Fig. 1g; a The opposite spindle" .45 of square" or "other eq ape-in cross the-dasher is adapted to abearing in ap'1ug46 which is' sired.

The dasher has, a as as, t amscrewed into a boss orhub 4 7". onthe front T head 32,-or said dashermay be otherwise rotatably mounted at'its outer.-end,"jas. de-gf rier to which ring is detacha h me; a h a' and each of these frames has arms 44 and 45- those of a one frame being in line longitudinally with those of the op osite frame.

Rigid longitudinal bars' 9 connect the arms 44and 45 of one of the frames to the corresponding arms of the opposite frame, whereby a dasher of great longitudinal rigidit 1n its outer portion is produced, lon gitu inal rigidity of the central portion of the dasher being secured by means of rods 51 which extend from one frame to the other, as shown in Fig. 1, each of these'rods being rigidly-secured at each end to its correspond ng frame of the dasher.

Extendlng from each of the bars49' to the corresponding rod 51 are aseries of radial beater blades or vanes 52, these vanes being rigidlysecured to or cast in one piece with t e bars 49 at their outer ends and resting at their inner ends upon the rods 51, to

'which they may be secured by soldering,

sense limiting.

I claim: V I

1. The combination, in an ice cream freezer, of a su' porting member-,1; swinging carrier pivotal y mounted on said'supporting member, a freezin vessel detachably mounted upon said carrier but free to swin therewith,' anda removable head at that and 'trative and are not intended to be in any iod of said? freezing vessel which is-mountedupon the carrier.

-2. Thei combination, ice cream .freezer,; of asupp'orting member, a swing.- -.ingcarrier pivotally mounted thereon, a

freezing vessel detachably -m oiun'ted u on said carrier, and a removable head at t at end ofithe vessel whichis mounted u on the" carrier'isaid headbe' within the lunits of the end of the 'vesse h is effected. I

w ereby the mounting ,3i"'1he combination, 'inan ice cream freezer, of a vessel having a rear ring, ahead seated-in said ring and a cary connectand from which it can beremoved in order topermit access to said-head.

4. Thek combinotiolb, n an. cream at; it's 'r'ear. ends-a and acarrier to; Jwhich- I sa1d.. rinc, theiring isdeta ably m 4d; carrier-hm mgm fo h ing pon' he head and maintaining with the respective spindle 42 or 45- the same upon-its seatin the rin 5. In mice cream freezer,

tEe combine-1 1,227,702 =3" tionoi a. freezer having a. ring at one end, a hen oi a. f mg vessel having a ring a head arran ed to engage Sci and a. no end, head engaging said g,' and a 15 member to which said ring 1s detachably membe which said 1' ng i detachabiy connected to p 't ess tosaid head. nnecte id-member a cans or 6; In an i cream ireezer, e combina engaging th head to mainta 1t agmns tion of a, freezer having a at one end,'a. said ring. I v head arrange to engage 1d ring, and a 'In testimony whereof, I have sign my 20 membe o hich said rm s deta hably name to this specification, in the presence of connec (1 permit access said head, said two subscribing witn. 10 ring bein constructed and gied to hold FRANK TYSON. the hes, a me 1' spaced rom each Witnesse other. KATE A Bmnm,

7. In an ice cream; freezer the combina- HAMILTON D Ton 

